CN218884747U - Waste heat utilization device for PE pipe production line - Google Patents
Waste heat utilization device for PE pipe production line Download PDFInfo
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- CN218884747U CN218884747U CN202223220256.2U CN202223220256U CN218884747U CN 218884747 U CN218884747 U CN 218884747U CN 202223220256 U CN202223220256 U CN 202223220256U CN 218884747 U CN218884747 U CN 218884747U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model discloses a waste heat utilization device for a PE pipe production line, wherein the PE pipe production line comprises a raw material drying and preheating unit, a heating and shaping unit and a cooling and shaping unit, and the device comprises a gas collecting hood unit, a fan, a gas-water heat exchanger, an air source heat pump, a compression heat pump, a cooling water tank and a water chilling unit; the gas collecting hood unit is sequentially connected with a fan, a heating pipeline of the gas-water heat exchanger and a cooling pipeline of the air source heat pump, and the heating pipeline of the air source heat pump is connected with the heating end of the raw material drying and preheating unit; the water outlet of the cooling shaping unit is sequentially connected with a cooling pipeline of the compression heat pump, a cooling water tank and a water pump, the water pump is connected with the water inlet of the cooling shaping unit, and the cooling water tank is connected with a water chilling unit; the heating pipeline of the compression heat pump is connected with the cooling pipeline of the gas-water heat exchanger. The utility model provides a waste heat utilization equipment has reduced the energy resource consumption when guaranteeing product quality, has reduced the thermal pollution of production process to the environment.
Description
Technical Field
The utility model relates to a PE manages production line technical field, specifically is a waste heat utilization equipment for PE manages production line.
Background
The production line of the PE pipe is a production process of heating, plasticizing, cooling and cooling raw materials, and comprises the production procedures of mixing and drying, plasticizing and extruding, molding, cooling and shaping, cutting and measuring, wherein the mixing and drying procedure uses high-quality hot air with the temperature of more than 90 ℃ for drying, and the cooling and shaping procedure uses circulating water for taking away low-quality waste heat. The existing PE pipe production line adopts circulating water of an electric heating hot air drying and electric driving water chiller cooling and shaping process, and has serious energy waste and thermal pollution.
1. The drying device is installed at the raw materials entry to "compounding is dry" process, uses electric energy production > 90 ℃ hot-blast stoving PE granule material and other auxiliary materials, and the minimum partly water droplet phase transition heat that turns into of stoving heat partly promotes PE raw and other materials's self temperature, and most heat discharges to the surrounding environment with lower quality.
2. The plasticating and extruding process equipment is used for discharging the PE granular material melting waste heat to the ambient air, and the waste gas generated in the melting process is also discharged together with the waste heat.
3. The 'cooling and shaping' process utilizes cooling water at 12 ℃ to spray and cool the PE pipe which is extruded and formed, the temperature of the spraying water rises to about 30 ℃, and the PE pipe can be recycled after being cooled by a water chilling unit. The waste heat of the circulating water can be discharged into the ambient air, and meanwhile, the water chilling unit needs to use electric energy to drive the circulating water for cooling.
In the PE pipe production system in the prior art, more electric energy is consumed for heating and cooling in different processes, and finally, the heat energy with lower quality is discharged into the environment, so that the working environment of a production line is deteriorated.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem in the background art, the utility model provides a following technical scheme:
the utility model provides a waste heat utilization device for a PE pipe production line, wherein the PE pipe production line comprises a raw material drying and preheating unit, a heating and shaping unit and a cooling and shaping unit, and the device comprises a gas collecting hood unit, a fan, an air-water heat exchanger, an air source heat pump, a compression heat pump, a cooling water tank and a water chilling unit;
the gas collecting hood unit is sequentially connected with a fan, a heating pipeline of the gas-water heat exchanger and a cooling pipeline of the air source heat pump, and the heating pipeline of the air source heat pump is connected with the heating end of the raw material drying and preheating unit;
the water outlet of the cooling and shaping unit is sequentially connected with a cooling pipeline, a cooling water tank and a water pump of the compression heat pump, the water pump is connected with the water inlet of the cooling and shaping unit, and the cooling water tank is connected with a water chilling unit;
the heating pipeline of the compression heat pump is connected with the cooling pipeline of the gas-water heat exchanger.
Furthermore, the gas-collecting channel unit comprises a first gas-collecting channel and a second gas-collecting channel which are connected in parallel, the first gas-collecting channel is arranged at the top of the raw material drying and preheating unit, and the second gas-collecting channel is arranged at the top of the heating and shaping unit.
Further, an outlet of the air source heat pump cooling pipeline is connected with the outside air.
Further, the inlet of the air source heat pump heating pipeline is connected with the outside air.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) The utility model discloses a waste heat utilization equipment for PE pipe production line, the system scheme of realizing high-efficient energy-saving production, including cooling water waste heat recovery, waste heat gas heat recovery and heat energy quality promotion recycle; the compression heat pump, the gas-water heat exchanger and the air source heat pump are used for recovering heat, and the low-quality waste heat energy is converted into high-quality heat energy through multi-step conversion to be used for drying and preheating raw materials of the PE production line, so that the use frequency and the electric load of drying and heating equipment and cold water equipment in the production line are reduced;
(2) The waste heat utilization device for the PE pipe production line of the utility model uses the waste heat generated in the production process for drying and heating the raw materials, thereby ensuring the product quality and reducing the energy consumption;
(3) The waste heat utilization device for the PE pipe production line reduces the total low-grade heat emission and reduces the heat pollution to the environment in the production process;
(4) The utility model discloses a waste heat utilization equipment for PE manages production line to the heat recovery utilizes in the air of the higher temperature in the environment, has reduced production facility ambient temperature to a certain extent, has improved operational environment.
Drawings
Fig. 1 is the structural schematic diagram of the waste heat utilization device for the PE pipe production line of the present invention.
In the figure: 1. a gas-collecting channel unit; 11. a first gas-collecting channel; 12. a second gas-collecting channel; 2. a fan; 3. a gas-water heat exchanger; 4. an air source heat pump; 5. a compression type heat pump; 6. a cooling water tank; 7. a water chilling unit; 8. and (4) a water pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
The utility model provides a waste heat utilization equipment for PE manages production line, PE manages production line and includes that raw materials stoving preheats unit, the moulding unit of heating and cooling design unit, as shown in figure 1, the device includes gas collecting channel unit 1, fan 2, air water heat exchanger 3, air source heat pump 4, compression heat pump 5, coolant tank 6 and cooling water set 7.
The gas collecting hood unit 1 is sequentially connected with a fan 2, a heating pipeline of the gas-water heat exchanger 3 and a cooling pipeline of the air source heat pump 4, and the heating pipeline of the air source heat pump 4 is connected with the heating end of the raw material drying and preheating unit.
The water outlet of the cooling shaping unit is sequentially connected with a cooling pipeline of the compression heat pump 5, a cooling water tank 6 and a water pump 8, the water pump 8 is connected with the water inlet of the cooling shaping unit, and the cooling water tank 6 is connected with a water chilling unit 7;
the heating pipeline of the compression heat pump 5 is connected with the cooling pipeline of the gas-water heat exchanger 3.
Specifically, the gas collecting channel unit 1 includes a first gas collecting channel 11 and a second gas collecting channel 12 connected in parallel, the first gas collecting channel 11 is installed on the top of the raw material drying and preheating unit, and the second gas collecting channel 12 is installed on the top of the heating and shaping unit.
The first gas collecting channel 11 and the second gas collecting channel 12 are funnel-shaped and can collect a certain range of air.
Specifically, the outlet of the cooling pipeline of the air source heat pump 4 is connected with the outside air.
Specifically, the inlet of the heating pipeline of the air source heat pump 4 is connected with the outside air.
During specific implementation, cooling water containing waste heat in a PE pipeline production line enters a compression heat pump 5 through a pipeline, the waste heat is extracted and flows into a cooling water tank 6, and a water chilling unit 7 is used for controlling the water temperature of the water tank so as to ensure that the water temperature flowing back to the PE pipe production line is not higher than a set temperature. The compressed heat pump 5 conveys the lifted high-quality heat energy to the gas-water heat exchanger 3.
The heat discharged to the air when the PE pipeline production line melts and plasticizes the particles is collected by the gas collecting hood unit 1 and then is conveyed to the heat exchanger through the air pipe and the fan 2, the air-water heat exchanger 3 uses the high-quality heat provided by the compression heat pump 5 to increase the temperature of the waste heat air in the air pipe, the temperature of the gas after heat exchange and temperature rise is increased again by the air source heat pump 4, and the high-temperature gas after temperature rise enters the raw material drying and preheating unit to dry and preheat raw materials of the PE pipe particles.
It should be noted that when the high-temperature gas provided by the air source heat pump meets the temperature required for drying, the electric auxiliary heating function does not need to be started, and if the high-temperature gas provided by the air source heat pump does not meet the required temperature, the electric auxiliary heating function is started to meet the drying preheating condition.
The utility model discloses an utilize equipment such as heat pump, heat exchanger, can be with originally by the exhaust residual heat gas with be used for the water of cooling to obtain the heat energy after, through the conversion of many ladders, will originally the low-quality heat source that can't utilize progressively convert the high-quality heat source that can use into, utilize heat energy in production, stoving process through these high-quality heat sources.
Example 2
The present embodiment provides a waste heat utilization method, which uses the waste heat utilization apparatus for the PE pipe production line in embodiment 1, and the method includes:
the PE pipeline production line can produce cooling water containing waste heat with the temperature of about 30 ℃, the cooling water containing the waste heat enters a compression heat pump through a pipeline, the compression heat pump can perform quality conversion on the waste heat water with the temperature of 30 ℃, low-temperature cooling water after the waste heat is extracted is about 15 ℃, the low-temperature cooling water is conveyed to a cooling water tank and then conveyed to the production line through the cooling water tank for recycling.
The heat extracted by the compression heat pump exchanges heat with circulating water to 45 ℃, the circulating water is conveyed to the gas-water heat exchanger, and low-temperature water flows back to the compression heat pump at the temperature of about 25 ℃ after heat exchange for heat exchange again to form circulation.
Residual heat gas generated by the PE pipeline production line after the residual heat air with the heat of about 30 ℃ emitted to the air is collected by the gas collecting hood unit is conveyed to the gas-water heat exchanger through the air pipe and the fan, the gas-water heat exchanger can enable 45 ℃ high-temperature circulating water to exchange heat with the residual heat air to generate the residual heat gas with the temperature of about 45 ℃, and the gas is discharged after the temperature of the gas is reduced to about 15 ℃ after the heat exchange of the air source heat pump.
The heat converted by the air source heat pump is used for sucking high-temperature gas which is heated from-5 ℃ to 30 ℃ of ambient gas to 85 ℃, and the high-temperature gas enters the raw material drying and preheating unit to dry the raw material.
The water chilling unit is used for controlling the water temperature of the water tank so as to ensure that the water temperature flowing back to the PE pipe production line is not higher than a set temperature.
The raw material drying unit is also provided with electric heating, and can perform electric auxiliary heating when the temperature of high-temperature gas is insufficient.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. A waste heat utilization device for a PE pipe production line comprises a raw material drying and preheating unit, a heating and shaping unit and a cooling and shaping unit, and is characterized by comprising a gas collecting hood unit (1), a fan (2), a gas-water heat exchanger (3), an air source heat pump (4), a compression type heat pump (5), a cooling water tank (6) and a water chilling unit (7);
the gas collecting hood unit (1) is sequentially connected with a fan (2), a heating pipeline of a gas-water heat exchanger (3) and a cooling pipeline of an air source heat pump (4), and the heating pipeline of the air source heat pump (4) is connected with the heating end of the raw material drying and preheating unit;
the water outlet of the cooling shaping unit is sequentially connected with a cooling pipeline of the compression heat pump (5), a cooling water tank (6) and a water pump (8), the water pump (8) is connected with the water inlet of the cooling shaping unit, and the cooling water tank (6) is connected with a water chilling unit (7);
the heating pipeline of the compression heat pump (5) is connected with the cooling pipeline of the gas-water heat exchanger (3).
2. The waste heat utilization device for the PE pipe production line is characterized in that the gas collecting hood unit (1) comprises a first gas collecting hood (11) and a second gas collecting hood (12) which are connected in parallel, the first gas collecting hood (11) is installed on the top of the raw material drying and preheating unit, and the second gas collecting hood (12) is installed on the top of the heating and shaping unit.
3. The waste heat utilization device for the PE pipe production line is characterized in that an outlet of a cooling pipeline of the air source heat pump (4) is connected with the outside air.
4. The waste heat utilization device for the PE pipe production line is characterized in that an inlet of the heating pipeline of the air source heat pump (4) is connected with the outside air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223220256.2U CN218884747U (en) | 2022-12-02 | 2022-12-02 | Waste heat utilization device for PE pipe production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223220256.2U CN218884747U (en) | 2022-12-02 | 2022-12-02 | Waste heat utilization device for PE pipe production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218884747U true CN218884747U (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223220256.2U Active CN218884747U (en) | 2022-12-02 | 2022-12-02 | Waste heat utilization device for PE pipe production line |
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| Country | Link |
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| CN (1) | CN218884747U (en) |
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2022
- 2022-12-02 CN CN202223220256.2U patent/CN218884747U/en active Active
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